<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">wow, very cool! I have had some brief contact with the people involved in the SIGCOMM paper. It is important to note that there do seem to be still </span><span style="font-size:10pt;font-family:Arial,sans-serif">many issues, e.g.,  their approach seems to only work over extremely short distances. So if ambient backscatter is going to be implemented over a larger area, the multipath or modulation of the carrier may be problematic. Also typically ambient RF power levels vary drastically with distance from TV transmitters. There is also the issue of potential interference from such mode of communication on TVs etc.<br>

</span><span style="font-family:arial,sans-serif;font-size:13px">Still very interesting research, and I think it's  a good exercise to think about the user experience possibilities when such technology does become  available. </span><div style="font-family:arial,sans-serif;font-size:13px">

cheers,</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Aug 15, 2013 at 3:11 PM, Jhon Faghih-Nassiri <span dir="ltr"><<a href="mailto:jfaghihnassiri@gmail.com" target="_blank">jfaghihnassiri@gmail.com</a>></span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">I attended a presentation by Professor Shyam a few weeks ago here at Qualcomm, he also did some very interesting work on using dopler shift to track gestures using WiFi AP devices. <br>


<br></span><a href="http://arstechnica.com/information-technology/2013/06/researchers-teach-wi-fi-to-see-identify-gestures/" target="_blank">http://arstechnica.com/information-technology/2013/06/researchers-teach-wi-fi-to-see-identify-gestures/</a><span style="font-family:arial,sans-serif;font-size:13px"><br>


<br>Thanks for sharing this!<br></span>Best,
<div>Jhon F.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div class="h5">On Wed, Aug 14, 2013 at 1:58 PM, Saiph Savage <span dir="ltr"><<a href="mailto:saiphcita@gmail.com" target="_blank">saiphcita@gmail.com</a>></span> wrote:<br>


</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">Neat research from UW:<br> <a href="http://www.washington.edu/news/2013/08/13/wireless-devices-go-battery-free-with-new-communication-technique/" target="_blank">http://www.washington.edu/news/2013/08/13/wireless-devices-go-battery-free-with-new-communication-technique/</a><p>





</p><div>Interesting to think how this might change wearable computing.</div><div>Cheers</div><span><font color="#888888">-- <br>Saiph Savage<div><a href="http://www.cs.ucsb.edu/~saiph/" target="_blank">http://www.cs.ucsb.edu/~saiph/</a><br>


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Jhon Faghih-Nassiri<div>
<div>6640 Del Playa Drive Unit B<br>Goleta, CA 93117</div><div><a href="mailto:jfaghihnassiri@gmail.com" target="_blank">jfaghihnassiri@gmail.com</a><br><a href="tel:619%20549%209991" value="+16195499991" target="_blank">619 549 9991</a></div>

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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Saiph Savage<br><br><br>
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